Definition of "egotistical"

All hanar have two names. The Face Name is known to the world; the Soul Name is kept for use among close friends and relations. Hanar never refer to themselves in the first person in conversation with someone they know on a Face Name basis. To do so is considered egotistical, so instead they refer to themselves as "this one", or the impersonal "it".

2008, BioWare, Mass Effect (Science Fiction), Redwood City: Electronic Arts, PC, scene: Hanar Codex entry